The Olympic Games helped to keep peace among the pugnacious states of the Greek world in that a sacred truce was proclaimed during the festival's month.
　　(A) world in that a sacred truce was proclaimed during the festival's month
　　(B) world, proclaiming a sacred truce during the festival's month
　　(C) world when they proclaimed a sacred truce for the festival month
　　(D) world, for a sacred truce was proclaimed during the month of the festival
　　(E) world by proclamation of a sacred truce that was for the month of the festival
The OA is D.
My question is about the OG explanation of choice A, which is "In that is stilted and overly formal." I remember I learnt the grammer is I have to add comma before in that and then it can be same meaning of because. Is that correct in GMAT?
Thanks in advance!
　　(A) world in that a sacred truce was proclaimed during the festival's month
　　(B) world, proclaiming a sacred truce during the festival's month
　　(C) world when they proclaimed a sacred truce for the festival month
　　(D) world, for a sacred truce was proclaimed during the month of the festival
　　(E) world by proclamation of a sacred truce that was for the month of the festival
The OA is D.
My question is about the OG explanation of choice A, which is "In that is stilted and overly formal." I remember I learnt the grammer is I have to add comma before in that and then it can be same meaning of because. Is that correct in GMAT?
Thanks in advance!
